Portable computer



FIG. 1 is a top view of a first embodiment of a portable computer showing our new design;

FIG. 2 is top view of a second embodiment thereof;

FIG. 3 is a top view of a third embodiment thereof;

FIG. 4 is a top view of a fourth embodiment thereof;

FIG. 5 is a top view of a fifth embodiment thereof;

FIG. 6 is a top view of a sixth embodiment thereof;

FIG. 7 is a top view of a seventh embodiment thereof;

FIG. 8 is a top view of an eighth embodiment thereof; and,

FIG. 9 is a top view of a ninth embodiment thereof.

The portion of the portable computer shown in gray shading in FIGS. 3, 6 and 9 represents a metallic surface. The diagonal broken lines represent glass. The dot-dash broken lines represent an unclaimed border of the claimed design. The dashed broken lines represent environmental subject matter that forms no part of the claimed design. The pairs of closely adjacent, spaced jagged broken lines form no part of the claimed design and the portions between such pairs of jagged broken lines are broken away to disclose indeterminate length. Portions of the design that may be visible between the jagged lines have been removed for clarity. 

The ornamental design for a portable computer, as shown and described. 